On Tue, Jan 22, 2008 at 03:34:55PM +0100, Dag-Erling Sm?rgrav wrote: > More modern machines have an HPET timer which is supposedly faster than > ACPI yet more reliable than TSC.
For NetBSD on AMD64 on a 1.2GHz Core2: ACPI ~2400 cycles HPET ~1500 cycles TSC ~800 cycles clockinterrupt ~600 cycles Those are from memory, give or take 10%. This is for the gettimeofday system call. Joerg _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
